Printing-machine.



A. R. PRIBIL.

PRINTING MACHINE.

APPLICATION FILED NOV. 7, 1902.

Patented Jan. 9, 1912.

/ $51 A 6mm, WM

ALEXIS R. PRIBIL, OF DETROIT, MICHIGAN, ASSIGNOR TO THE AUTOMATIC PLATENPRESS COMPANY, OF NE!v YORK, N. Y., A CORPORATION OF NEW JERSEY.

PRINTING-MACHINE.

Specification of Letters Patent.

Patented Jan. 9,1912.

Application filed November 7, 1908. Serial Np. 461,446.

To all whom it may concern:

Be it known that I, ALEXIS R. PRIBIL, a

citizen of the United States of America, and

tioning on the platen "a sheet or other matter to be printed.

As it will appear from this specification and the accompanying drawingthis invention is particularly applicable to those types,

of printing machines having a flat, stationary platen against theunderside 'of which the impression istaken; but, the invention is notexclusively confined to such a type of machine.

The broad idea of this invention is to provide means for directing astrong blast 6f air against the sheet as the latter passes onto theplaten and also while at rest there, so as to firmly hold the sheet inits proper position until the impression is finished. To this end theinvention comprises such elements .as will hereinafter be set forthwhile reference is had to the accompanying drawing in which Figure 1 isan outline side elevation of a printing machine embodying my invention,with parts omitted and largely diagram matic. Fig. 2 is a detail view ofthe nozzle device and Fig. 3 is a'view of a separate nozzle showing amodification.

The reference numeral 1. denotes the framework of the press, 2 is thestationary platenwhile 3 is the form member carrying the form 4. Theform member is suspend- .ed in arms 5 journaled on shaft 6 and isoscillated by means of toggle links 7 8 and link 9 ivoted on crank pin10 which latter is fast 11 the gear 11 driven fromplnion 12.

13 indicates spur gearsover which run an endless conveyor 14 whichcarries grippers 15. The spur gears are driven in any suitable mannerand the grippers may be of any well known construction. A compresser 16is-suit-ably mounted in the frame and may be operated in any manner, notshown.

17 denotes a bracket, one on either side of the press and ending in afork 18, in which issupported a hollow pipe 29 provided with a nozz1e27and connected to thecompressor by a hose -21. The pipe 29 is clamped inany position in the fork 17 by means of a nut 22, so that the height'anddirection of the blast may be adjusted. The blast may be eitherintermittent or continuous.

As seen in Fig. 2 the nozzle 27 is screwed into a strap 28 which ispivoted on the pipe 29 at 30, and a short flexible connection 31connects the pipe and the nozzle, so that the latter may be adjusted atan angle. to the pipe. This will be useful when the sheet to be printedis registered very much to one side of the platen.

Fig. 3 shows a forked nozzle 32 which i may be used instead ofthe nozzle27..

The device operates as follows: The sheet 23 to be printed is fed on aninclined table 24 at'the lower end of which it is seized by the grippersand carried in the direction of the arrow until it is properly under theplaten when it stops, the operation of the endless conveyer being alsointermittent. During its travel, while held by the grippers, and alsoafter it has stopped, the sheet issubjectto a strong blast from a nozzle27 said blast keeping the sheet smooth and tight up against the platen,so that when the impression is taken the sheet will be firmly andsmoothly in place on the platen, and after the impression is 'over, theendless conveyer removes the sheet. Thus it will be seen that because ofthe blast the sheet is kept fiat against the platen from the moment itis seized by the grippers and no special means are necessary to supportthe rear edgeof the sheet. In case an intermittent blast is used it willof course start to operate the moment the form-member moves down, and beshut off during the impression, or the blast may be otherwise turned tosuit the particular kind of stock handled on the ress. It will also beapparent that my invention may be used on an inclined or even movableplaten, and only changes in the mounting of the nozzles are necessary,the operation being substantially as setforth above.

What I claim is: p

The combination of a platen, mechanisms for conveying a sheet thereto,means for Signed at Hanover, Pa., this 28th day of ejegting a blast 0f air't0ward 1said sheet, the October 1908. Z sai means com r1s1n a nozz e1 e anozzle pivoted th reon in the c t r and a' ALEXIS f PRIBIL' 5flexible eennection between the nozzle and Witnesses:

the pipe for permitting the adjustment of JULIUS FISCHER, the directionof the saidblast. DALE M. SLEGNER.

